Finding the Fourth Proportional to 9,200.76, 12,698.71 and 5,423.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,200.76 : 12,698.71 = 5,423.71 : x
2. Step 2: Convert to fraction form
   9,200.76/12,698.71 = 5,423.71/x
3. Step 3: Cross multiply
   9,200.76x = 12,698.71 × 5,423.71
4. Step 4: Simplify right side
   9,200.76x = 68,874,029.80
5. Step 5: Solve for x
   x = 68,874,029.80/9,200.76
6. Step 6: Final answer
   x = 7,485.69